POSEN
Illinois - Community Water System - PWSID: IL0312520
System Information
| PWSID | IL0312520 |
| System Name | POSEN |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1981 |
| Last Reported | Feb 26, 2026 |
Location & Contact
| State | Illinois |
| City | POSEN |
| ZIP Code | 60469 |
| Address | 2440 West Walter Zimny Drive |
| Organization | MARROQUIN, JULIO |
| Phone | 708-293-2620 |
Population & Service
| Population Served | 5,331 |
| Service Connections | 1,754 |
Drinking Water Violations (57)
This water system has 57 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 2, 2025 | - | RPT | No | No | - | - | - | Resolved | Jul 2, 2025 | - | |
| Jul 2, 2025 | - | RPT | No | No | - | - | - | Resolved | Jul 2, 2025 | - | |
| Jul 2, 2025 | - | RPT | No | No | - | - | - | Resolved | Jul 2, 2025 | - | |
| Jul 2, 2025 | - | RPT | No | No | - | - | - | Resolved | Jul 2, 2025 | - | |
| Jul 1, 2025 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Dec 30, 2020 | - | MR | No | No | - | TT | - | Resolved | Feb 2, 2021 | - | |
| Dec 30, 2020 | - | MR | No | No | - | TT | - | Resolved | Feb 2, 2021 | - | |
| Jul 1, 2017 | - | Other | No | No | - | - | - | Resolved | Jul 10, 2017 | - | |
| Jul 1, 2017 | - | Other | No | No | - | - | - | Resolved | Jul 10, 2017 | - | |
| Jul 1, 2014 | - | Other | No | No | - | - | - | Resolved | Sep 8, 2014 | - | |
| Jul 1, 2014 | - | Other | No | No | - | - | - | Resolved | Sep 8, 2014 | - | |
| Jan 1, 2014 | Aug 31, 2014 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2014 | - | |
| Jan 1, 2014 | Aug 31, 2014 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2014 | - | |
| Jan 1, 2014 | Aug 31, 2014 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2014 | - | |
| Jan 1, 2014 | Aug 31, 2014 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2014 | - | |
| Jan 1, 2014 | Aug 31, 2014 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2014 | - | |
| Jan 1, 2014 | Aug 31, 2014 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2014 | - | |
| Jan 1, 2014 | Aug 31, 2014 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2014 | - | |
| Jan 1, 2014 | Aug 31, 2014 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2014 | - | |
| Jun 1, 2013 | Jun 30, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2013 | - | |
| Jun 1, 2013 | Jun 30, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2013 | - | |
| Jun 1, 2013 | Jun 30, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2013 | - | |
| Jun 1, 2013 | Jun 30, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2013 | - | |
| Jul 1, 2012 | - | Other | No | No | - | - | - | Resolved | Aug 2, 2012 | - | |
| Jul 1, 2012 | - | Other | No | No | - | - | - | Resolved | Aug 2, 2012 | - | |
| Jul 1, 2007 | Dec 31, 2007 | MR | No | No | - | TT | - | Resolved | Dec 31, 2007 | - | |
| Jul 1, 2007 | Dec 31, 2007 | MR | No | No | - | TT | - | Resolved | Dec 31, 2007 | - | |
| Jul 1, 2004 | - | Other | No | No | - | - | - | Resolved | Jun 30, 2005 | - | |
| Jul 1, 2004 | - | Other | No | No | - | - | - | Resolved | Jun 30, 2005 | - | |
| Oct 1, 2002 | Oct 31, 2002 | MR | No | No | - | 5% of samples | - | Archived | Oct 31, 2002 | - | |
| Oct 1, 2002 | Oct 31, 2002 | MR | No | No | - | 5% of samples | - | Archived | Oct 31, 2002 | - | |
| Nov 1, 2001 | Nov 30, 2001 | MR | No | No | - | 5% of samples | - | Archived | Nov 30, 2001 | - | |
| Nov 1, 2001 | Nov 30, 2001 | MR | No | No | - | 5% of samples | - | Archived | Nov 30, 2001 | - | |
| Oct 1, 2001 | Oct 31, 2001 | MR | No | No | - | 5% of samples | - | Archived | Oct 31, 2001 | - | |
| Oct 1, 2001 | Oct 31, 2001 | MR | No | No | - | 5% of samples | - | Archived | Oct 31, 2001 | - | |
| Mar 1, 2001 | Mar 31, 2001 | MR | No | No | - | 5% of samples | - | Archived | Mar 31, 2001 | - | |
| Mar 1, 2001 | Mar 31, 2001 | MR | No | No | - | 5% of samples | - | Archived | Mar 31, 2001 | - | |
| Feb 1, 2001 | Feb 28, 2001 | MR | No | No | - | 5% of samples | - | Archived | Feb 28, 2001 | - | |
| Feb 1, 2001 | Feb 28, 2001 | MR | No | No | - | 5% of samples | - | Archived | Feb 28, 2001 | - | |
| Oct 1, 2000 | Oct 31, 2000 | MR | No | No | - | 5% of samples | - | Archived | Oct 31, 2000 | - | |
| Oct 1, 2000 | Oct 31, 2000 | MR | No | No | - | 5% of samples | - | Archived | Oct 31, 2000 | - | |
| Aug 1, 2000 | Aug 31, 2000 | MR | No | No | - | 5% of samples | - | Archived | Aug 31, 2000 | - | |
| Aug 1, 2000 | Aug 31, 2000 | MR | No | No | - | 5% of samples | - | Archived | Aug 31, 2000 | - | |
| Jul 1, 2000 | Jul 31, 2000 | MR | No | No | - | 5% of samples | - | Archived | Jul 31, 2000 | - | |
| Jul 1, 2000 | Jul 31, 2000 | MR | No | No | - | 5% of samples | - | Archived | Jul 31, 2000 | - | |
| Oct 1, 1999 | Oct 31, 1999 | MR | No | No | - | 5% of samples | - | Archived | Oct 31, 1999 | - | |
| Oct 1, 1999 | Oct 31, 1999 | MR | No | No | - | 5% of samples | - | Archived | Oct 31, 1999 | - | |
| Apr 1, 1999 | Apr 30, 1999 | MR | No | No | - | 5% of samples | - | Archived | Apr 30, 1999 | - | |
| Apr 1, 1999 | Apr 30, 1999 | MR | No | No | - | 5% of samples | - | Archived | Apr 30, 1999 | - | |
| Jun 1, 1998 | Jun 30, 1998 | MR | No | No | - | 5% of samples | - | Archived | Jun 30, 1998 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.